package com.zqs.grainmall.product.config;

import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.plugins.pagination.optimize.JsqlParserCountOptimize;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;

/**
 * @program: grain-mall
 * @description: 分页插件
 * @author: Mr.Zhang
 * @create: 2020-10-25 15:13
 **/
@Configuration
@EnableTransactionManagement //开启事务
@MapperScan("com.zqs.grainmall.product.dao")
public class MybatisConfig {
        //Spring boot方式引入分页插件
        @Bean
        public PaginationInterceptor paginationInterceptor() {
            PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
            // 设置请求的页面大于最大页后操作， true调回到首页，false 继续请求  默认false
             paginationInterceptor.setOverflow(true);
            // 设置最大单页限制数量，默认 500 条，-1 不受限制
             paginationInterceptor.setLimit(1000);
            // 开启 count 的 join 优化,只针对部分 left join
            paginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));
            return paginationInterceptor;
        }


}
